Table column 'adhocschedule' is showing junk value which is not readable

I'm Trying to Convert 'adhocschedule' column of the 'fusion_ora_ess.request_history' table into a readable format using 'utl_raw.cast_to_varchar2'. However, it's not displaying readable data as expected.

select utl_raw.cast_to_varchar2(adhocschedule),adhocschedule
from fusion_ora_ess.request_history;